4-element Frictional Kelly Bar

Ability to manufacture friction, interlocking and combined Kelly bar, and customize tubes series for Kelly bars on demand of customers
Advanced processing equipment and tooling facilities to ensure the high wear resistance and high reliability of Kelly bar
Selection of steel tubes and keys for power head manufactured by domestically renowned steel mills and adoption of special heat treatments process to reduce the weight of Kelly bar as a whole while guarantee the strength of Kelly bar  
Complete type spectrum and flexible designing and manufacturing capacities to ensure that Kelly bars are perfectly suited for the demand of customers.

Friction Kelly bars are generally suitable for soft soils conditions, such as soils, sands, etc. And the friction kelly bar has the Character of easily operating and deeper drilling depth than interlocking Kelly bar.